Meta Platforms Technologies

A wearable device including one or more sensors and one or more through-holes extending from an exterior portion of the first material to an interior portion of the first material where the one or more sensors are embedded is described. The wearable device includes a first material. The wearable device further includes a shield material, the shield material having a heat tolerance greater than a heat tolerance of the first material. The wearable device further includes one or more sensors positioned beneath the shield material and embedded within an overmolded portion of the first material. The wearable device further includes a through-hole, extending from an exterior portion of the first material to an interior portion of the first material where the one or more sensors are embedded, wherein the one or more sensors detect data via the through-hole.

A display assembly that includes a display projector assembly configured to provide visual information to a waveguide along a projection axis aligned with a display window of the waveguide is disclosed. The display assembly includes a lens coupled to the display projector assembly, where the lens is configured to dampen vibrations from the display projector assembly to the waveguide. The lens has a first material having a first shape with a first toughness, and the first shape of the lens exposes the display window of the waveguide to the display projector assembly. The waveguide is coupled to the lens and comprises a second material having a second shape with a second toughness, where the waveguide is configured to output the visual information. The first material has a greater toughness or greater thickness than the second material. A gap separates the display projector assembly from the waveguide along the projection axis.

An optical system includes a Pancharatnam-Berry Phase (PBP) lens configured to diffract light at three distinct wavelengths corresponding to red, green, and blue spectra, where the PBP lens includes a multilayer structure with alternating chiral and achiral liquid crystal layers, and the PBP lens has a transparency of at least 85% to wavelengths outside the red, green, and blue spectra.

A computer-implemented method comprises detecting, by an audio sensor communicatively coupled to the computer of a first device, a first instance of an audio signal from an environment external to the first device, the first device being communicatively coupled to a second device that receives a second instance of the audio signal, receiving, by the first device, a second instance of the audio signal from the second device that is communicatively coupled to the first device, generating by the first device, using the first instance of the audio signal and the second instance of the audio signal, a modified audio signal, and transmitting the modified audio signal to the second device for output.

The disclosed display system may include a housing having an inner surface, and one or more display devices housed within the housing. The display system may also include a flexible heat spreader coupled to a surface of one of the display devices and the inner surface of the housing to thermally couple the display device to the housing. Various other methods, systems, and computer-readable media are also disclosed.

A device of the subject technology includes a radiofrequency (RF) circuit enclosed within a shielding and an RF cage partially enclosing components of the RF circuit. The RF cage is configured to protect RF components of the RF circuit against an electromagnetic interference (EMI) caused by the components. The RF cage is partially embedded within a printed circuit board (PCB), and the RF circuit is mounted on the PCB via a number of ball grid arrays (BGAs).

A method is provided in which at least one processor of smart glasses belonging to a first user establishes a wireless communication link with a wearable audio device of a second user. The smart glasses detect voice audio from the first user using at least one microphone and transmit the voice audio to the wearable audio device via the wireless communication link. Various other aspects are also disclosed.

A device of the subject technology includes a human body communication (HBC) controller and a first electrode electrically coupled to the HBC controller and arranged to contact skin of a user when the user wears the device. The device further includes a second electrode electrically coupled to the HBC controller.

An example method for managing authentication across multiple devices is described. A first device, having a first privilege level, receives a first authentication input, and in response unlocks. The first device further generates a secondary authentication credential based on the authentication input and transmits this credential to one or more secondary devices, where the one or more secondary devices each have a respective privilege level that is lower than the first privilege level, and the secondary authentication credential causes the one or more secondary devices to unlock. In some embodiments, hierarchical privileges are maintained where the first device has higher authentication privileges than the secondary devices. In some embodiments, secure authentication is implemented through cryptographic device identification, secure channels, and privilege-based access control, while enabling features like device replacement, synchronized state management, and enterprise security controls. Systems and devices configured to perform such methods are also described.

A method of navigating through one or more user interface elements is described. The method includes displaying a plurality of user interface (UI) elements, obtaining data generated during performance of a first swiping motion of a thumb over an index finger, the first swiping motion having a first kinematic profile, and based on the first kinematic profile, causing movement of a focus selector at a first rate through a first set of the plurality of UI elements. The method further includes obtaining additional data generated during performance of a second swiping motion of the thumb over the index finger, the second swiping motion having a second kinematic profile different than the first kinematic profile, and based on the second kinematic profile, causing movement of the focus selector at a second rate through a second set of the plurality of UI elements.